Missouri Compromise of 1820 Map - U.S. Territorial Expansion and Slavery Division #2241978 (License: Personal Use)

The map highlights key territorial divisions following the Missouri Compromise: Missouri (admitted 1821) as a slave state, Maine as a free state, and the 36°30′ latitude line establishing slavery’s northern limit in the Louisiana Purchase lands. Regions like the Oregon Country (jointly claimed), Michigan Territory, and the Unorganized Territory are also labeled to show westward expansion dynamics.

Used in educational history web pages, lesson plans, or museum digital exhibits about antebellum U.S. politics; matches user intent to understand how the Missouri Compromise shaped sectional tensions and territorial governance before the Civil War.